Control Circuit Inspection

Check for short to ground in control circuit
1. Ignition "OFF" & Relay connector: Disconnected.
2. Measure resistance between terminal 3 of the relay harness connector and chassis ground.
  Specification: Infinite
  
  Fig 1: Measuring Resistance Between Terminal 3 Of Relay Harness Connector And Chassis Ground
  Courtesy of HYUNDAI MOTOR CO.
3. Is resistance within the specification?
  YES
  - Go to next step as below
  NO
  - Repair as necessary and go to VERIFICATION OF VEHICLE REPAIR procedure.
Check for short to power in control circuit
1. Disconnect PCM connector
2. Ignition "ON" & Engine "OFF"
3. Measure voltage between terminal 3 of the relay harness connector and chassis ground
  Specification : Approx 0V
  
  Fig 2: Measuring Voltage Between Terminal 3 Of Relay Harness Connector And Chassis Ground
  Courtesy of HYUNDAI MOTOR CO.
4. Is voltage within the specification?
  YES
  - Go to next step as below
  NO
  - Repair as necessary and go to VERIFICATION OF VEHICLE REPAIR procedure.
Check for open in control harness
1. Measure resistance between terminals 3 of the relay harness connector and 69 of the PCM harness connector.
  Specification: Approx 0Ω
  
  Fig 3: Measuring Resistance Between Terminals 3 Of Relay Harness Connector And 69 Of PCM Harness Connector
  Courtesy of HYUNDAI MOTOR CO.
2. Is resistance within the specification?
  YES
  - Thoroughly Check for poor connection between PCM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to VERIFICATION OF VEHICLE REPAIR procedure.
  NO
  - Repair as necessary and go to VERIFICATION OF VEHICLE REPAIR procedure.